National Archives and Records Administration - ARC Identifier 1257667 / Local Identifier 255-HQ-223 - Earth Resources Technology Satellite (ERTS) - National Aeronautics and Space Administration. (10/01/1958 - ). This film illustrates how the Earth Resources Technology Satellite (ERTS) helped to meet the need for a worldwide survey of Earth resources in order to assist scientists and governments plan their use and conservation. -